2(a+b) |
a-b |
3b |
2a+2b |
ab+7b2 |
2a2-2b2 |
49 |
4 |
31 |
4 |
4(a+b)2 |
2(a+b)(a-b) |
3b(a-b) |
2(a+b)(a-b) |
ab+7b2 |
2a2-2b2 |
4(a+2b)(a+b) |
2(a+b)(a-b) |
2a+4b |
a-b |
49 |
4 |
31 |
4 |
13 |
40 |
2x-3 |
4x2-2x |
8 |
2x-1 |
x2-1 |
x2+2x |
x-1 |
x |
|
1 |
a |
1 |
b |
3ab |
2a+3ab+2b |
A.
| B.
| C.
| D.
|
A.1 | B.2 | C.5 | D.6 |
x2 |
x+3 |
9 |
x+3 |
x-3 |
2x |
3 |
2 |
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